| Class I railroads |
11,377 |
| Burlington Northern and Santa Fe Railway Co. |
4,806 |
| Kansas City Southern Railway Co. |
381 |
| Union Pacific Railroad Co. |
6,190 |
| Regional railroads |
924 |
| South Orient Railroad Co., Ltd. |
380 |
| Texas Mexican Railway |
544 |
| Local railroads |
678 |
| Angelina and Neches River Railroad |
15 |
| The Blacklands Railroad |
64 |
| Border Pacific Railroad |
32 |
| Georgetown Railroad |
30 |
| Grainbelt Corp. |
12 |
| Gulf, Colorado, and San Saba Railway |
68 |
| Kiamichi Railroad Company |
13 |
| Panhandle Northern Railroad |
31 |
| Pecos Valley Southern Railway |
18 |
| Point Comfort and Northern Railway |
16 |
| Rockdale, Sandow, and Southern Railroad |
10 |
| Sabine River and Northern Railroad |
40 |
| Texas and New Mexico Railroad |
34 |
| Texas and Northern Railway Co. |
8 |
| Texas North Western Railway |
43 |
| Texas Northeastern Railroad |
117 |
| Texas Rock Crusher Railway Co. |
6 |
| Timber Rock Railroad, Inc. |
16 |
| West Texas and Lubbock Railroad Co. |
104 |
| Western Rail Road Co. |
1 |
| Switching and terminal railroads |
1,027 |
| Alamo Gulf Coast Railroad Co. |
10 |
| Austin Area Terminal Railroad |
162 |
| Brownsville and Rio Grande International Railroad |
41 |
| CMC Railroad, Inc. |
5 |
| Corpus Christi Terminal Railroad, Inc. |
23 |
| Dallas, Garland, and Northeastern Railroad |
187 |
| Fort Worth and Western Railroad Co. |
276 |
| Galveston Railway, L.P. |
43 |
| Moscow, Camden, and San Augustine Railroad |
7 |
| Port Terminal Railroad Association |
37 |
| Rio Valley Switching Co. |
78 |
| South Plains Lamesa Railroad, Ltd. |
5 |
| South Plains Switching, Ltd. Co. |
15 |
| Southern Switching Co. |
13 |
| Southwestern Railroad Co., Texas Division |
76 |
| Texas City Terminal Railway |
5 |
| Texas South-Eastern Railroad |
12 |
| Texas, Gonzales, and Northern Railway Co. |
12 |
| Wichita, Tillman, and Jackson Railway Co. |
20 |
